Compilare: user.cpp:7: warning: integer overflow in expression user.cpp: In function ‘int main()’: user.cpp:219: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:220: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘void difmin(trp*&)’: user.cpp:26: warning: ‘m1’ may be used uninitialized in this function user.cpp:26: warning: ‘m2’ may be used uninitialized in this function